Oil & Gas
| Sat 13 Jun 2026
Beijing, June 13 -- Changqing Eng Design Co Ltd and PetroChina Co Limited have applied Chinese patent for Frostbite Prevention Structure for Ultralow-temperature Pipeline. Shao Zhicui, Sun Yinjuan, Qiu Peng, Yang Guang, Yang Xiaofeng, Liu Jiaming, Gao Yun, Liu Man, He Jun, Wang Yahui, Zeng Rui, Feng Yajun and He Zhiying develope..